JP2009513459A - Waste, especially hospital waste recovery equipment and bags therefor - Google Patents

Abstract

A disposable bag (2) having an opening for filling (3), a substantially lateral frame (5) on which the bag can be hung by at least part of the end of the bag opening;
Means for closing the bag after filling;
Closing means comprising a flexible wall element (8);
Comprising suction means provided to remove a portion of the amount of air contained in the bag;
The suction means (11) is located substantially in the middle of the flexible wall element (8) and is particularly at risk of infection or similar risk with waste, particularly highly compressible waste. A device that collects both and / or one hospital treatment waste.

Description

  The present invention relates to a device for collecting waste, a disposable bag with a filling opening, a support member for a basically vertical bag with a substantially lateral frame at the top where the bag can be hung. And an apparatus including means for closing the bag after filling.

  The present invention is particularly concerned with, but not limited to, an apparatus for collecting highly compressible waste and / or hospital treatment waste at risk of infection.

  For a long time, hospital treatment waste at risk of infection was compressed in hospital facilities by vertical mechanical compactors based on large pistons. Dirt was generated on the machine itself, especially on the piston, making it easier to transmit pathogens. The fight against illnesses occurring in hospitals is grounded in these systems.

  Stopping the compactor treats hospital waste because therapeutic waste is handled via a safe circuit that is bulky (compression wraps, packaging materials, nonwovens, etc.), controlled and very expensive Raise the price. Compression cannot be performed in either the pre-process or the post-process, and in practice, human intervention cannot occur due to, for example, grouping of bags.

  The search continues to reduce waste volume to maintain or even improve hygiene and user convenience.

  According to FR 2 855 506, in the name of the same applicant company as the applicant, the waste compactor is a fixed sheet that is connected to each other so as to form a deformable apron. Or it is known to include a side consisting of an assembly of flat plates. The device seeks to provide acceptable conditions of hygiene and safety for most types of waste, while facilitating compression to reduce waste volume as much as possible. Nevertheless, its structure and in particular the casing bag and the tamping system in direct contact with the waste are incompatible with the management of hospital treatment waste at risk of infection.

  WO 87/04686 proposes a device with a cover incorporating a bag and a suction device on the frame. The device is incompatible with hospital treatment type waste at risk of infection because the waste is pressed against the cover and thereby contaminates the instrument at the suction barrel. In addition, the present principles are designed for repetitive compression cycles, and when the user notices that the bag is full, the closure is performed manually by the user outdoors. This approach does not meet the need in terms of user convenience for bag closure and related operations. Moreover, hospital treatment type waste at risk of infection includes materials such as non-woven fabrics, compression wraps and lightweight packaging materials, so outdoor bag closure is not very effective. The material has a significant (shape) memory effect and regains its volume as soon as it is no longer under pressure.

  The object of the present invention is to provide an apparatus that makes it easier to manage waste, especially hospital treatment waste, essentially taking into account hygiene and safety issues. It is desirable that the device be easy to use, robust, and at an acceptable cost.

According to the present invention, there is provided a device for collecting waste, particularly highly compressible waste and / or hospital treatment waste at risk of infection or similar risk, comprising a filling opening, a bag A disposable bag having a substantially lateral frame that can be hung by at least one end of the opening and means for closing the bag after filling;
A closing means comprising a flexible wall element;
-With suction means provided to remove part of the air volume put into the bag,
The suction means is characterized by being located substantially in the center of the flexible wall element.

  According to another aspect of the invention, an apparatus for collecting waste of the type described above is provided with a valve on the bag so as to allow connection to a suction means, the valve being The valve is two-dimensional when the bag is flat and is substantially in the shape of a truncated cone when the bag is deployed.

  In accordance with yet another aspect of the present invention, an apparatus for collecting waste of the type described above forms a foldable bag with flexible wall elements, the bag defining an orifice, in particular its central area. And the flexible wall element can be sucked out to the closed position through the orifice. The bag is made with a single cut.

  The substantially transverse frame is attached to a stand or similar element, and the disposable bag is free of a casing. The bag is not contained in a container, such as a cylindrical fixed container, which prevents unhygienic containment and remains available.

  Advantageously, the suction means can create a vacuum at the opening provided on the inner surface of the technical cover, the suction area corresponding to the opening in the central area.

  If possible, it is desirable for the valve to be provided in the center of the flexible wall closure element and for the technical cover opening to cover the valve. The valve is substantially in the form of a frustoconical appendage when unfolded, open at its small base, and in two dimensions when the bag connecting through its large base to the flexible closure wall of the bag is flat. It can consist of a protrusion and the valve prevents air from entering the bag after separation of the suction means.

    Advantageously, the flexible wall element forming the closing means is connected to the bag along the end of the opening of the bag forming the hinge.

    Closing means can be provided for closing the bag by tightening.

    Preferably, the technical cover can be folded over the frame and fitted with assembly means for closing the bag by joining the flexible wall element to the bag portion.

    The assembly means may be a pulse heating means for producing a heat seal (heat fusion).

    Advantageously, the assembly means is formed by a heat sealing means having a U-shaped outer shell for heat sealing a bag opening other than that used as a hinge to the flexible wall closure element. . The heat sealing means may comprise individual conductive linear sections that are in perpendicular contact with each other and are in electrical contact at their ends.

    As a variant, the heat sealing means can be an ultrasonic device.

    Usually, the suction means is equipped with a suction device capable of fixing a vacuum state between -0.1 bar and -0.3 bar at a flow rate of approximately 50 to 500 liters per minute.

    Advantageously, the suction means comprises a suction port which surrounds the valve in the closed state and can be opened via an annular suction on the outer surface of the valve.

    The technical cover and the suction means can form a unit that can be separated from the structure containing the bag. The containment structure can be fitted with a lightweight cover that allows the heat sealing means to operate.

    The apparatus can include a bag support member with a floating frame that allows the bag to be prevented from becoming crumpled during heat sealing.

The device may comprise an electronic circuit board intended to direct a cycle comprising the following steps after the technical cover is closed.
-Instructions for heat sealing the sheet to the bag are given to close the bag.
-A heat-sealing cycle is initiated, including a heating period followed by a break to cool the seal and prevent tearing of the seal due to the tension generated by the suction on the bag.
-A evacuation cycle is then started and the duration of the evacuation is adjusted so that each user can set up the device according to the waste to be processed.

    The present invention also provides that the flexible wall element forms an extension of the bag wall portion and is connected to one of the sides of the opening, the closure element forms a foldable bag cover, and the bag is an element. The above claim with an opening and a flexible wall element for closing the opening of the bag after filling, characterized in that it has a cut-out defining the hinge area and is stored flat and the bag is obtained in a single cut It also relates to a disposable bag made of a flexible material, in particular plastic, for the device for collecting the waste to be collected.

    Preferably, the disposable bag comprises a valve mounted on the flexible wall closure element to allow connection to the suction means.

    Advantageously, the valve preferably consists of a two-dimensional protrusion when the bag is flat and, when deployed, is substantially in the shape of a truncated cone element and is open at its small base, Connected to the bag wall through its large base, a valve prevents air from entering the bag after separation of the suction means. When the bag is manufactured, the valve is created by heat sealing and bag cutting. The valve is mounted at the center of the flexible wall closure element.

    The assembly means is preferably formed by heat sealing means, preferably provided for heat sealing the flexible wall element to the bag portion.

    The device according to the invention makes it possible to reduce the volume of waste without applying extreme compression and to automate the closure of the bag, thereby making it easier to handle the waste.

    The flexible wall closure of the element means is designed to cover and assemble the part of the bag that folds and opens on the outer shell of the frame.

    Apart from the devices described above, the invention resides in a number of other devices which will be dealt with more clearly below, in relation to the exemplary embodiments described with reference to the accompanying drawings. But that is by no means limiting.

These drawings are as follows: FIG. 1 is a perspective view of a bag support member of an apparatus according to the present invention.

    FIG. 2 is a plan view including a partial cross-section of a plastic film bag for the apparatus of the present invention.

    FIG. 3 is a perspective view of an open bag with the end of the opening folded to be attached to the support member of FIG.

    FIG. 4 is a perspective schematic view of a closing means comprising a flexible wall element.

    FIG. 5 is a perspective view of a support member fitted with a new empty bag.

    FIG. 6 is a perspective view of a device with a technical cover that is folded to draw a portion of gas out of a filled bag and closed by heat sealing.

    FIG. 7 is a perspective view of a variant of the device in which the technical cover and the suction means can be separated from the support member.

    FIG. 8 is a perspective view of a modified version of the apparatus of FIG. 7 in which the bag support member is a lightweight perforated cover.

    FIG. 9 is an enlarged cross-sectional view along line IX-IX in FIG. 8 after the bag is closed.

  With reference to the drawings, in particular FIG. 5, the device 1 shows a device for collecting waste, in particular hospital treatment waste at risk of infection. The device comprises a disposable bag 2 having a filling opening (or mouth) 3, for example a polygonal, in particular a rectangular, square or circular substantially transverse frame 5 at the top, which is essentially vertical. A bag support member 4 is provided. The bag 2 can be attached to the frame 5 by folding a part of the end of the opening 3 so as to cover the outline of the frame. According to the modified type, the element for fastening the periphery of the bag opening to the frame attaches the bag to the frame. According to another variant, the bag can be attached by attaching one or more flaps to the frame or by using an adhesive material. The bag 2 is fully usable and does not require a rigid casing such as a rigid cylindrical container surrounding it. This prevents unsanitary containment.

  When the bag is fully filled with waste, or when temporary closure of the bag is desirable, particularly to limit odors or hide the waste from sight, the means 7 for closing the bag is a stand-alone It is done. The closing means 7 comprises a flexible wall element 8 which is advantageously made of the same sheet of plastic material as the bag 2 and can be pressed against the folded part 6.

  In particular, the assembly means A formed by the heat sealing means 9 is used to close the bag 2 by joining the flexible wall element 8 to the folded part 6. As a variant, the assembly means can be an adhesive.

  The flexible wall element 8 is preferably provided with an orifice in its central part that allows air to be sucked through the element in the closed position of the bag.

  The support member 4 comprises suction means 10 that can create a vacuum in the opening 11 provided on the inner surface of a foldable technology cover 12 connected on the frame 5.

  The bag 2 is made of a plastic film, particularly a polyethylene film, and is made by a single cut. The flexible wall element 8 can stretch a portion of the wall of the bag, as illustrated in FIG. The flexible wall element 8 is then connected to one of the side surfaces of the opening 3 and forms a foldable bag cover. The bag is stored flat as illustrated in FIG. 2 and has a cutout 8a that defines the hinge area of the element 8.

  As a variant, the bag cover can consist of one separate sheet S (FIG. 4) which is placed in a separate and predetermined position. In this case, the element 8 forming the cover is provided as a cut roll and can be gradually separated. According to another variant, the bag 2 is clamped through a clamp (not shown), i.e. by pulling the substantially vertical walls of the bag 2 attached to the frame 5 close to this frame and It can be closed by heat sealing the wall.

  The presence of the foldable cover 8 makes it possible to optimize the effective volume of waste so that no waste trap is provided when the bag 2 is closed. The foldable cover 8 makes it possible to provide a heat seal area around the cover.

  A valve V is provided in the area of the wall of the bag 2 so that the suction means can be connected, and the valve V prevents air from entering the bag after separation from the suction means 10.

  The valve V is preferably made as a two-dimensional protrusion 13 when the bag is flat, as illustrated in FIG. The protrusion 13 is formed as a substantially frustoconical appendage, as shown in FIG. 4, open at its small base, and connected to the flexible closure wall of the bag at its large base. Preferably, the “back-flow cylinder port” type protrusion 13 is created by heat sealing and cutting the bag during manufacture of the bag. The protrusion 13 is preferably provided in the flexible wall closing element 8, in particular in the central part of the closing element. The valve V thus made can be fully integrated into the bag without any additional cost in either the bag or the device.

  The frustoconical shape of the protrusion 13 provides the ability to open under the influence of suction. The bag advantageously comprises graphics that allow the protrusions 13 to be seen and located even when folded or installed.

  As a variant, the valve V may be located on a part of the bag other than the cover, for example one of the vertical walls. Suction valves can also be provided at the bottom or side wall of the bag or at the corner between the two walls.

  According to another variant, the valve V may consist of a valve element which is inserted in a region of the bag wall, for example in the bag cover or part of the bag body. In this case, the operation of heat seating the valve element into the bag is required, which complicates the manufacturing process associated with the two-dimensional protrusion 13 solution.

  According to another variant, the suction can be carried out through an unsealed area of the cover 8 or of the body of the bag 2. The bag cover is then sealed.

  A fine wire mesh type filter F (FIG. 5) is located upstream of the suction valve.

  By arranging a suction valve on the top of the bag on the horizontal plane corresponding to the closure element 8, it is possible to suck out the air farthest from each wall and waste and prevent the valve from being blocked. This arrangement makes it possible to delay the contact between the waste and the central area of the cover.

  The suction means 10 is preferably relatively reduced, for example between -0.1 bar and -0.3 bar, at a flow rate of from 50 to 500 liters per minute, advantageously approximately around 200 liters per minute. It is desirable to provide a suction device for fixing the vacuum state as much as possible. The suction means 10 can be housed inside the struts that form the support member 4 of the device 1. A base portion 14 having casters hidden by the casing 14 a is fixedly attached to the support member 4. As a variant, the suction means can be integrated into the technical cover 12. According to another variant (FIG. 7), the suction means 10 can be separated from the vertical support member 4 and from the base 14.

  The bag 2 is provided at the end of the opening 3 and incorporates a handle made by an elongated hole 15 located just below the frame 5 after folding as shown in FIGS. The protruding portion 5a is fixed to the hole 15 and is provided at the lower end portion of the frame 5 in order to be provided for hanging the bag.

  For the collection of hospital waste, the bag volume is preferably 110 liters and the bag is made of 45 micron thick polyethylene film.

  For other uses, the bag volume can be substantially increased. For example, for dead leaf collection or collected restaurant waste or another specific application, it is possible to select a large volume bag, for example for 240 liters or even 400 or 800 liters. In order to provide a more sufficient guarantee of particular use that it is particularly perforated, the strength of the bag can be chosen to be higher. For example, it would be possible to select polyethylene with a thickness of 80 or 120 microns.

  The suction means 10 is connected to an orifice 11 provided in the technical cover by means of a flexible tube 10a, schematically represented. The orifice 11 covers the valve formed by the protrusion 13 when the wall element 8 is pressed against the technical cover 12 as illustrated in FIG.

  After filling, the bag is closed and sealed using heat sealing means 9 provided on the inner surface of the technical cover 12 of the foldable support member. Preferably, the heat seal 9 creates a pulse heat seal. The heat sealing means 9 can comprise a heating resistor wire covered under a technical cover 12, for example a polytetrafluoroethylene type heat and anti-adhesive material. The heat sealing means 9 extends along the peripheral part of the technical cover corresponding to the frame 5 in addition to the area 12 a corresponding to the hinge of the foldable cover 8. It is possible to provide a layer of heat-resistant and anti-adhesive material, for example of the polytetrafluoroethylene type, on the area of the frame 5 covered by the part of the bag to be heat-sealed.

  For the rectangular frame 5, the heat sealing means 9 has a U-shaped outer shell for heat-sealing the three side surfaces of the opening of the bag 2 other than being used as a hinge. The U-shaped outer shell can comprise three conductive straight sections that are in perpendicular contact with each other and are in electrical contact at their ends. These straight sections can be formed by flat and conductive strips. It can be formed in particular by a strip of resistance metal strip material of aluminum.

  Pulse heat sealing allows for rapid use. It also makes it possible to close the technical cover of the support member without undesirable (local) heat sealing. Zones of combustion past the heat seal time are avoided, which protects the device. The heat sealing time can be controlled without utilizing operator evaluation or mechanical automation.

  As a variant, the heat sealing means 9 may consist of an ultrasonic heat sealing device.

  The pressing force of the technical cover 12 on the frame 5 for heat sealing can be generated either by the weight of the technical cover 12 or by an electromagnet that guarantees closure and heat sealing. It can also be the heat seal pressing force applied by the user pressing on the technical cover of the device. As a variant, the device is applied by the user with sufficient pressure on the frame 5 before an indication of heat sealing and / or vacuum suction is given to the heat sealing means 9 and / or suction means 10. It is also possible to provide a mechanical latch that is put in place to close the technical cover.

  In order to prevent the effect of over-pressing the technical cover of the device on the frame 5 due to excessive pressure on the bag during the heat-sealing cycle, the floating of the heat-sealing means 9 on the technical cover 12 of the device is prevented. It is also possible to provide a simple assembly. In this case, when the technical cover 12 fixes the end to the frame 5, the heat sealing means 9 applies a pressure adjusted by a spring to the portion of the bag to be heat sealed. According to another example, the heat sealing means 9 is attached to a sheet of compressible foam.

  When the technical cover 12 is closed with a latch (not shown), the latch can incorporate a spring that adjusts the closing pressure.

  As a variant, the means of assembly between the flexible wall element 8 and the part of the bag that provides a hermetic closure can be a pressure seal. For this purpose, the bag material can be locally or totally coated with an adhesive. The adhesive is created by the user, for example using the effect of an insulator, or electromechanically activated with sufficient pressing force. Alternatively or additionally, the adhesive can be protected by a peel-off method before being applied to achieve a seal.

  The suction means 10 can comprise a simple and small built-in suction device capable of fixing a vacuum state between -0.1 bar and -0.3 bar. With this suction device, it is possible to extract air between wastes without crushing. The vacuum applied by the suction device should not be too strong to avoid puncturing or breaking the bag.

  In the case of hospital applications, a network of vacuum piping is typically provided at hospital facilities. The suction means of the device 1 can consist of a single connector which is then connected to a vacuum network.

  As a variant, instead of providing a suction device that creates a relatively slight vacuum, it is possible to provide a vacuum pump, for example increasing the vacuum from 0.4 to 0.6 bar and reducing the waste volume. is there. However, the vacuum state must correspond to the thickness of the bag to prevent the bag from tearing.

  The suction area corresponds to the opening 11 made in the technical cover of the device. This suction area is in particular rectangular, square or circular. The suction area can be an almond-type surface portion to force deformation and then opening of the bag valve V. The near perimeter of the suction area can be recessed in a dish shape to force deformation of the valve V and then opening. It is possible to provide a groove 11a (FIGS. 1, 5, 7) around the suction area on the bottom of the technical cover 12. The indented grooves extend radially around the suction area 11. During sucking, the bag cover 8 coincides with the groove. If a large volume element, for example a diaper or a plastic sleeve, is sealed against the suction area, the air suction continues thanks to the groove 11a, even though the central suction area is blocked. be able to.

  The cover 12 of the support member is provided with a stopper formed in a barrel or a truncated pyramid shape, which is fastened to the suction hole 11 and discarded after the period of use, for example once every 10 bags or once a day. it can. This prevents contamination that gradually contaminates the air extraction area. As a variant, instead of having an opening 11, the hollow suction caisson has nothing in its interior, so the suction valve V cannot touch any wall, and as a result it can foul it. It wo n’t get dirty.

  A disinfectant product diffuser 16 (FIG. 6) is provided to periodically deliver one disinfectant into the suction circuit. The diffuser 16 is located upstream or downstream of the filter 17 or can be replaced with a filter. The cycle for diffusing the disinfectant product can be facilitated with each suction, the diffusion being caused by the vacuum condition itself. This, as a result, prevents fouling that gradually contaminates the air extraction area and the pipe.

  Preferably, the filter 17 (FIG. 6), in particular the particle filter, is provided only downstream of the bag 2 and the air outlet of the valve V. The filter is replaced periodically, for example, every 10 days or every 100 bags. Contaminants are blocked by this filter, and downstream system components, i.e. pipes and suction devices, always remain clean without the need for cleaning operations. An advantageous type of filter is the HEPA filter (high efficiency particulate air filter).

  The electrical supply of the heat seal 9 and the suction means 10 can be provided with a transformer, typically 220 volts, from the main wiring. As a variant, the electricity supply can be provided by a mobile battery, for example 24 VDC, 10 amps.

  The support member or outer frame 1 preferably consists of a lightweight tubular framework without a shaping structure attached to a caster concealed by a casing 14a. This makes it easier to clean and move.

The technical cover 12 of the support member includes suction means and heat sealing means. The control electronics in the form of an electronic circuit board (not shown) is preferably contained in the technical cover. An electronic circuit board is provided to manage the various cycles described below.
The technical cover 12 is normally closed manually and when the user wants to close the bag, the user presses a button on the electronic circuit board to start the cycle.
The electronic circuit board gives an instruction to heat-seal the leaf 8 to the bag 2 in order to close the bag 2;
-A heat-sealing cycle is started, to cool the seal and to prevent the seal from tearing due to the tension caused by bag suction, followed by a heating period of approximately 3 seconds, in particular a heating period of approximately 3 seconds. Including.
-The draw cycle is then triggered with a draw period of approximately 30 seconds. Adjustment of the draw-out time is provided to allow each user to plan the device depending on the waste being processed. As a variant, the evacuation cycle is started manually and the user must press the control button and keep pressing this button for the evacuation to continue. Suction time is then controlled by the user, especially thanks to direct visual inspection of bag and waste movement.

  When means are provided for the pressing force applied by the technical cover 12 to the heat seal area during the suction cycle, this pressing force can be relaxed before the end of the suction, in particular approximately 5 seconds before the end, As a result, the bag 2 is moved slightly, allowing additional suction of residual air.

  As a variant illustrated in FIG. 7, the technical cover 12 and the suction means 10 form a unit that can be separated from the structure housing the bag. The separation of the technical cover provided with closing means makes it possible to create a closed place where several support members 1 of the bag can be manipulated. The result is to eliminate the means that make it possible to meet the needs of areas with high hygiene requirements. This structure can advantageously be used in conjunction with the principle of connection to the vacuum network of the treatment center. The structure housing the bag is separated from the technical cover and there is no cover.

  According to the variant, a lightweight cover is added to the containment structure separated from the bag. The lightweight cover must be open in order to be able to guide the containment structure to the heat seal location

  According to another variant according to FIG. 8 or FIG. 9, the bag support member 1 comprises a lightweight perforated cover 18 that is clearly delimited along the rear lateral edge. The cover 18 has a hole at the bottom of the groove 19 extending on the three U-shaped side surfaces of the cover 18, for example. The groove 19 coincides with the U of the heat seal means 9 that is firmly secured to the main groove 19 (FIG. 9). The lightweight cover 18 supports the bag cover 8 while allowing the heat sealing means 9 and the suction means according to FIG. 9 to operate therethrough, thanks to the orifice 11 corresponding to the orifice 11 of the technical cover 12. Provided for. Between the two operations of throwing away waste into the bag 2, the lightweight cover 18 can be closed. For the bag cover 8 that is heat sealed at the end 6, the containment structure is positioned under the technical cover 12 with the bottom cover 18 of the hole closed, and then the technical cover 12 is folded and its heat sealed. The means 9 passes through the groove 19 and comes to push the area of the cover 8 held against the end 6.

  According to a variant, the frame supporting the bag can be attached to the wall.

  The use and operation of the device of the present invention is as follows.

  After picking up the bag 2 in flattened storage, the user opens it, opens the cover 8 and opens the opening 3 other than that which serves as a hinge to the cover 8, as illustrated in FIG. Fold the end of.

  The user passes the folded bag through the opening of the frame 5, and fastens the protruding portion 5a at the opposite position of the frame to the hole 15 provided at the end of the bag. The bag cover 8 is pulled up substantially vertically, and the projection 13 forming the valve is held in the opening 11 of the cover without being fully open. The outline is then that of FIG.

  The hospital waste is gradually discarded into the bag 2 suspended as described above. The cover can be closed again on demand according to normal operation. When the amount of waste reaches a defined height at a sufficient distance from the opening of the bag, the technical cover 12 is folded at the closure element 8 on the portion 6 of the bag covering the frame 5.

  A heat sealing cycle is triggered, and the heat sealing means 9 creates a hermetic seal of the closure element 8 over the opening of the bag.

  The suction cycle is then performed to open valve V and remove a portion of the volume of air contained in bag 2. Suction is performed through the closure element 8. Although the bag volume is reduced, no extreme compression action is added to the waste contained in the bag. The coefficient of volume reduction of the bag is approximately 1.5 to 2 depending on the type of waste and the vacuum cycle. When the suction is finished, the valve V is closed again to prevent air from entering the bag. All these operations are performed without the need for the user to touch any part of the bag that may be soiled.

  The flow rate of the suction means 10 (approximately 50 to 500 liters per minute) causes the valve to open, after a reasonable processing time, removes the air above the bag and then most of the cavity (in the bag) Allows you to get rid of the air.

  The bag is then removed from the frame 5 and carried to the storage area with the aid of a handle.

  The new bag is then placed in place for a new collection operation.

  The collection device is not only used for hospital treatment waste at risk of infection, but also nonwoven fabrics used in diapers, medical fields, factories, or catering industry, or light weight catering waste, especially beakers, paper tablecloths, Suitable for cardboard plates and many other types of waste.

  The collection device is also suitable for other specific applications such as household waste, fallen leaves, cut grass, rolled or torn paper from office waste bins, or other waste that is mechanically fragile Yes.

The collection device according to the invention makes it possible to reduce the volume of waste bags to be processed by reducing and removing the volume of unwanted air at the top of the bag, as well as by matching weakly resistant waste. To do.

FIG. 1 is a perspective view of a bag support member of an apparatus according to the present invention. FIG. 2 is a plan view including a partial cross-section of a plastic film bag for the apparatus of the present invention. FIG. 3 is a perspective view of an open bag with the end of the opening folded to be attached to the support member of FIG. FIG. 4 is a perspective schematic view of a closing means comprising a flexible wall element. FIG. 5 is a perspective view of a support member fitted with a new empty bag. FIG. 6 is a perspective view of a device with a technical cover that is folded to draw a portion of gas out of a filled bag and closed by heat sealing. FIG. 7 is a perspective view of a variant of the device in which the technical cover and the suction means can be separated from the support member. FIG. 8 is a perspective view of a modified version of the apparatus of FIG. 7 in which the bag support member is a lightweight perforated cover. FIG. 9 is an enlarged cross-sectional view along line IX-IX in FIG. 8 after the bag is closed.

Explanation of symbols

DESCRIPTION OF SYMBOLS 2 Disposable bag 3 Filling opening 4 Support member 5 Frame 6 End 7 Closing means 8 Flexible wall element 9 Heat sealing means 10 Suction device 11 Opening portion 12 Technical cover 13 Protruding portion 14 Suction device 15 Hole 16 Diffuser 17 Filter 18 Cover 19 Groove

Claims (25)

A device for collecting waste, particularly highly compressible waste and / or hospital treatment waste at risk of infection or similar risk, and having a filling opening (3) A possible bag (2), a substantially lateral frame (5) that can be hung by at least part of the end of the bag opening, and means for closing the bag after filling;
Closing means comprising a flexible wall element (8);
Comprising suction means provided to remove a portion of the amount of air contained in the bag;
The suction means (11) is located substantially in the center of the flexible wall element (8) waste, in particular a hospital waste collection device. A device for collecting waste, particularly highly compressible waste and / or hospital treatment waste at risk of infection or similar risk, and having a filling opening (3) A possible bag (2), a substantially lateral frame (5) that can be hung by at least part of the end of the bag opening;
Means for closing the bag after filling;
Closing means comprising a flexible wall element (8);
Suction means provided to remove a portion of the amount of air contained in the bag;
A hand-operated valve (V) provided on the bag to allow connection to the suction means;
The valve (V) consists of a two-dimensional element when the bag is flat and is substantially in the form of a truncated cone element when placed.
Waste, especially hospital waste collection equipment. A device for collecting waste, particularly highly compressible waste and / or hospital treatment waste at risk of infection or similar risk, and having a filling opening (3) A possible bag (2), a substantially lateral frame (5) that can be hung by at least part of the end of the bag opening;
Means for closing the bag after filling;
Closing means comprising a flexible wall element (8);
Comprising suction means provided to remove a portion of the amount of air contained in the bag;
Said flexible wall element (8) forms a foldable bag cover, which has an orifice, in particular in its central area, which can be sucked through said flexible wall element in a closed position Is what
Waste, especially hospital waste collection equipment.   4. A device according to claim 1, wherein the substantially lateral frame (5) is attached to a stand or similar element and the disposable bag (2) has no casing. The device according to item.   The suction means can create a vacuum with an opening (11) provided on the inner surface of a couvercle technique (12), the suction area corresponding to the opening (11) in the central area An apparatus according to any one of claims 1 to 4, characterized in that:   The valve (V) is provided at the center of the flexible wall element (8), and the opening (11) of the technical cover (12) covers the valve (V). And the device according to the combination of 5.   The valve (V) is substantially in the form of a frusto-conical appendage when placed, open at its small base and connected via its large base to the flexible closure wall (8) of the bag. When the bag is flat, it can be a two-dimensional protrusion (13), and the valve prevents air from entering the bag after separation of the suction means. Item 7. The apparatus according to Item 2 or 6.   4. The flexible closure wall (8) forming the closing means is connected to the bag along the end of the opening of the bag forming a hinge. Equipment.   The technical cover (12) is folded over the frame and mounted with assembly means (A) for closing the bag by joining the flexible wall element (8) to the bag part (6) 6. The apparatus of claim 5, wherein:   10. The apparatus according to claim 9, wherein the assembly means (A) is a means of pulse heating to create a heat seal.   The assembly means (A) has a U-shaped outer shell for heat-sealing the first opening portion of the bag other than that used as a hinge to the flexible wall closing element (9) The device according to claim 9, wherein the device is formed by:   12. A device according to claim 11, characterized in that the heat sealing means (9) comprise individual conductive straight sections that are in electrical contact at their ends and run perpendicular to each other.   The apparatus according to claim 11, wherein the heat sealing means is an ultrasonic apparatus.   The suction means includes a suction device (10) capable of fixing a vacuum state between -0.1 bar and -0.3 bar at a flow rate of approximately 50 to 500 liters per minute. Device according to any one of the preceding claims characterized.   3. A device according to claim 2, characterized in that it comprises a suction port which surrounds the valve (V) in the closed state and can be opened via an annular suction on the outer surface of the valve.   6. Device according to claim 5, characterized in that the technical cover (12) and the suction means (10) form a unit which can be separated from the structure containing the bag.   17. A device according to claim 16, characterized in that the containment structure is fitted with a lightweight cover (18) that allows the heat sealing means (9) to operate.   12. Device according to claim 11, characterized in that it comprises a bag support member with a floating frame (5) that makes it possible to prevent the bag from becoming crumpled during heat sealing. 10. A device according to the combination of claims 5 and 9, characterized in that it comprises an electronic circuit board intended to direct a cycle comprising the following steps after the technical cover is closed.
-Instructions for heat sealing the sheet to the bag are given to close the bag.
-A heat-sealing cycle is initiated, including a heating period followed by a break to cool the seal and prevent tearing of the seal due to the tension generated by the suction on the bag.
-A evacuation cycle is then started and the duration of the evacuation is adjusted so that each user can set up the device according to the waste to be processed.   An opening and a flexible wall element (8) for closing the opening of the bag after filling, said flexible wall element (8) forming an extension of the wall portion of the bag, said opening 20. Waste according to any one of claims 1 to 19, characterized in that it is connected to one of the side surfaces of (3) and the closure element (8) forms a foldable bag cover. Disposable bag made of flexible material, especially plastic, for the device for recovering.   Disposable according to claim 20, characterized in that the bag stored flat has a cutout (8a) defining a hinged area of the element (8), the bag being obtained in a single cut. Possible bag.   Disposable bag according to claim 20 or 21, characterized in that it comprises a valve (V) mounted on the flexible wall closure element (8) to allow connection to a suction means.   The valve (V) is in the form of a frustoconical appendage when placed, open at its small base, and two-dimensional when the bag connected to the wall of the bag via its large base is flat. 23. A disposable bag according to claim 22, characterized in that it can consist of a protrusion (13) at the top and the valve prevents air from entering the bag after separation of the suction means.   24. A disposable bag according to claim 22 or 23, characterized in that the valve (V) is created by the heat sealing and cutting of the bag when the bag is manufactured.   25. A disposable bag according to any one of claims 22 to 24, wherein the valve (V) is provided in the central part of the flexible wall closure element (8).

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